How Docker deploys SpringBoot projects and integrates Redis images for access counting
- WBOYforward
- 2023-06-02 10:37:14747browse
The final effect is as follows
Just a few steps
1. Install Docker CE 2. Run Redis image 3. Java environment preparation 4. Project Preparation 5. Write Dockerfile 6. Release project 7. Test service
Environment preparation
System: Ubuntu 17.04 x64
Docker 17.12.0-ce
IP:45.32.31.101
1. Install Docker CE
It is not recommended to use: "Script for installation" in China. The download and installation will be very slow. Use step 1 to install. See the link below: Conventional installation method
1. Conventional Installation method
Ubuntu 17.04 x64 Install Docker CE
2. Script for installation
It is not recommended to use scripts for domestic installation:
Install Docker CE
$ curl -fsSL get.docker.com -o get-docker.sh $ sudo sh get-docker.sh
<output> If you would like to use Docker as a non-root user, you should now consider adding your user to the "docker" group with something like: sudo usermod -aG docker your-user Remember that you will have to log out and back in for this to take effect! WARNING: Adding a user to the "docker" group will grant the ability to run containers which can be used to obtain root privileges on the docker host. Refer to https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface for more information.</output>
Verify Docker CE
Verify that Docker CE is installed correctly by running the hello-world image
$ sudo docker run hello-world root@souyunku:~# sudo docker images REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest f2a91732366c 7 weeks ago 1.85kB
2. Run Redis mirror
1. Run the mirror
$ docker run --name redis-6379 -p 6379:6379 -d redis Unable to find image 'redis:latest' locally latest: Pulling from library/redis c4bb02b17bb4: Pull complete 58638acf67c5: Pull complete f98d108cc38b: Pull complete 83be14fccb07: Pull complete 5d5f41793421: Pull complete ed89ff0d9eb2: Pull complete Digest: sha256:0e773022cd6572a5153e5013afced0f7191652d3cdf9b1c6785eb13f6b2974b1 Status: Downloaded newer image for redis:latest 2f1f20f672e386a61644e1c08232ea34bdfd6a0c244b55fa833fcfd6dd207288
2. Check the mirror
View the mirror
root@souyunku:~# docker images redis REPOSITORY TAG IMAGE ID CREATED SIZE redis latest 1e70071f4af4 4 weeks ago 107MB
View the mirror process
root@souyunku:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2f1f20f672e3 redis "docker-entrypoint.s…" 14 seconds ago Up 14 seconds 0.0.0.0:6379->6379/tcp redis-6379
View the container process
root@souyunku:~# docker container ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2f1f20f672e3 redis "docker-entrypoint.s…" 7 minutes ago Up 7 minutes 0.0.0.0:6379->6379/tcp redis-6379
3. Test the Redis service
Connect the Redis service through redis-cli and test the stored data
root@souyunku:~# docker run -it --link redis-6379:redis --rm redis redis-cli -h redis -p 6379 redis:6379> set count 1 OK redis:6379> get count "1" redis:6379> exit root@souyunku:~#
3. Java Environment preparation
Note: Read the following steps! ! !
1. The Java environment is for compiling the Github Maven SpringBoot sample project and preparing
2. Or you can compile it locally and upload it. Then install the following Java environment: Jdk, Maven, Git, you don’t need to configure it
1. Install Jdk
Download JDK method: 1
Download jdk1.8 under Linux environment, please go to (official website) to download jdk Installation file
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Download JDK method: 2
My link in Baidu Cloud Disk: http://pan.baidu.com/s/1jIFZF9s Password: u4n4
Download JDK Method: 3
Use wget to download,
$ wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u141-b15/336fa29ff2bb4ef291e347e091f7f4a7/jdk-8u141-linux-x64.tar.gz
Note that if you use: Download JDK method: 3
then in the following steps, replace jdk1.8.0_144 with jdk1.8.0_141
Start the installation
Upload in the /opt directory
Unzip
$ cd /opt $ tar zxvf jdk-8u144-linux-x64.tar.gz $ mv jdk1.8.0_144/ /lib/jvm
Configure environment variables
$ vi /etc/profile
#jdk
export JAVA_HOME=/lib/jvm
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
Make environment variables effective
$ source /etc/profile
Verify
root@souyunku:~# java -version java version "1.8.0_141" Java(TM) SE Runtime Environment (build 1.8.0_141-b15) Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)
2. Install Maven
$ apt-get install maven
Verify Maven
root@souyunku:~# mvn -v Apache Maven 3.3.9 Maven home: /usr/share/maven Java version: 1.8.0_141, vendor: Oracle Corporation Java home: /lib/jvm/jre Default locale: en_US, platform encoding: UTF-8 OS name: "linux", version: "4.10.0-35-generic", arch: "amd64", family: "unix"
3. Install Git
$ apt-get install git
Verify Maven
root@souyunku:~# git --version git version 2.11.0
4. Project preparation
1. Compile the project
1. Compile the project on the server Maven yourself
Use git to clone the project
$ git clone https://github.com/souyunku/other-projects.git
Use maven to compile the project
$ cd other-projects/docker-spring-boot-demo/
2. Modify project
Modify the Redis server address spring.redis.host=45.32.44.217 to the local IP. When running the Redis image, Redis has been made into an external network service 0.0.0.0:6379-> 6379/tcp
$ vi src/main/resources/application.properties # Redis服务器地址 spring.redis.host=45.32.44.217 $ mvn package
Copy the docker-spring-boot-demo-0.0.1-SNAPSHOT.jar project in the target/ directory to the /opt directory for later use
$ cp target/docker-spring-boot-demo-0.0.1-SNAPSHOT.jar /opt/
2. Compile the project in local Maven, and then upload it to the /opt directory. You will use it later
Modify the Redis server address of application.properties
other-projects/docker-spring-boot-demo/src/main/resources/application.properties # Redis服务器地址 spring.redis.host=45.32.44.217
5. Write the Dockerfile
Write Dockerfile based on java:8 mirror
$ cd /opt/ $ touch Dockerfile $ vi Dockerfile
Edit the content as follows
# 基于哪个镜像 FROM java:8 # 将本地文件夹挂载到当前容器 VOLUME /tmp # 拷贝文件到容器，也可以直接写成ADD docker-spring-boot-demo-0.0.1-SNAPSHOT.jar /souyunku-app.jar ADD docker-spring-boot-demo-0.0.1-SNAPSHOT.jar souyunku-app.jar RUN bash -c 'touch /souyunku-app.jar' # 开放80端口 EXPOSE 80 # 配置容器启动后执行的命令 ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/souyunku-app.jar"]
6. Release the project
1. Compile the image
$ cd /opt/ $ docker build -t souyunku-app:v1 .
Seeing the following information proves that your Dockerfile is written correctly and the image is compiled successfully
Sending build context to Docker daemon 18.72MB Step 1/6 : FROM java:8 8: Pulling from library/java 5040bd298390: Pull complete fce5728aad85: Pull complete 76610ec20bf5: Pull complete 60170fec2151: Pull complete e98f73de8f0d: Pull complete 11f7af24ed9c: Pull complete 49e2d6393f32: Pull complete bb9cdec9c7f3: Pull complete Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d Status: Downloaded newer image for java:8 ---> d23bdf5b1b1b Step 2/6 : VOLUME /tmp ---> Running in 0559a62b0cd5 Removing intermediate container 0559a62b0cd5 ---> b1f3846913a4 Step 3/6 : ADD docker-spring-boot-demo-0.0.1-SNAPSHOT.jar souyunku-app.jar ---> 9f60dad5d2ac Step 4/6 : RUN bash -c 'touch /souyunku-app.jar' ---> Running in 39d5c09ab614 Removing intermediate container 39d5c09ab614 ---> 2b691adf7922 Step 5/6 : EXPOSE 80 ---> Running in 11a577437a23 Removing intermediate container 11a577437a23 ---> 78815d6fe6b2 Step 6/6 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/souyunku-app.jar"] ---> Running in eca10fed3d02 Removing intermediate container eca10fed3d02 ---> 8ec4e85a0f05 Successfully built 8ec4e85a0f05 Successfully tagged souyunku-app:v1
2. Check the image
root@souyunku:/opt# docker images souyunku-app REPOSITORY TAG IMAGE ID CREATED SIZE souyunku-app v1 8ec4e85a0f05 2 minutes ago 681MB
3. Run the image
Run the background daemon, and then map the container port to the external network port 80
root@souyunku:/opt# docker run --name MySpringBoot -d -p 80:80 souyunku-app:v1 e68d438603619e363883d4eae65d3918e1c3e00f867731207bccf06f5690dc64
4. View the process
View the container process, you can see that redis is in Port 6379, MySpringBoot project is at port 80
root@souyunku:/opt# docker container ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES e68d43860361 souyunku-app:v1 "java -Djava.securit…" About a minute ago Up About a minute 0.0.0.0:80->80/tcp MySpringBoot 0f9646171edd redis "docker-entrypoint.s…" 39 minutes ago Up 39 minutes 0.0.0.0:6379->6379/tcp redis-6379
7. Test service
Browser access: http://127.0.0.1/, of course I did not enter 127.0. 0.1 I did it directly on the server, using the public IP
Docker Compose
Docker Compose is one of Docker’s official orchestration projects, responsible for fast Deploy distributed applications in a cluster.
An application using Docker containers is usually composed of multiple containers. With Docker Compose , you no longer need to use shell scripts to start containers. In the configuration file, all containers are defined by services, and then use docker-compose scripts to start, stop and restart the application, the services in the application and all containers that depend on the service.
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